Evidence map›Paper›PMID 21799130›Full record

Trial reportJournal of applied physiology (Bethesda, Md. : 1985)2011

Effects of high- and low-velocity resistance training on the contractile properties of skeletal muscle fibers from young and older humans.

Dennis R Claflin, Lisa M Larkin, Paul S Cederna, Jeffrey F Horowitz, Neil B Alexander, Neil M Cole, Andrzej T Galecki, Shu Chen, Linda V Nyquist, Bruce M Carlson and 2 more

Erratum issued Registry-linked trialOpen access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of applied physiology (Bethesda, Md. : 1985), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT07205133 (Effectiveness of Whole Body Vibration Therapy and Usual Care Compared to Usual Care in Improving Muscle Mass, Strength and Function in Older Adults), which is not on this map. Cited by 55 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 5 pooled it
8.4field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07205133 narecruitingnot on this mapstarted 2026, after this paper: background citation

Effectiveness of Whole Body Vibration Therapy and Usual Care Compared to Usual Care in Improving Muscle Mass, Strength and Function in Older Adults

TypeinterventionalSponsorChangi General HospitalRan2026 to 2027Enrolled40ConditionsAging, Frailty, Sarcopenia, Muscle StrengthArmsWhole Body Vibration Training, Otago Exercise
3 · Its place in the literature

Who cites it

55 citing papers in PubMed, 5 syntheses or guidelines pooled it, 140 citations in OpenAlex.

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  7. High-speed resistance training vs. low-speed resistance training on body composition and physical function in adults with sarcopenic obesity.European review of aging and physical activity : official journal of the European Group for Research into Elderly and Physical Activity · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Dennis R ClaflinDepartment of Surgery, Section of Plastic Surgery, Univ. of Michigan, BSRB, Rm. 2023, 109 Zina Pitcher Place, Ann Arbor, MI 48109-2200, USA. claflin@umich.edu
Lisa M Larkin
Paul S Cederna
Jeffrey F Horowitz
Neil B Alexander
Neil M Cole
Andrzej T Galecki
Shu Chen
Linda V Nyquist
Bruce M Carlson
John A Faulkner
James A Ashton-Miller
University of Michigan–Ann Arbor · USLaboratoire d’immunologie intégrative du cancer · FRPlastic Surgery Hospital · CNInternational College of Applied Kinesiology-USA · US

Funding

Research Education CoreP30AG024824 · NIA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Neil Alexander · 2004 to 2026
$29.2M
THE FLY HEART: A MODEL FOR AGED-RELATED CHANGES IN CARDIAC PERFORMANCEP01AG015434 · NIA · UNIVERSITY OF MINNESOTA · PI CHAMBERLAIN, JEFFREY S · 1998 to 2007
$8.8M
NIA NIH HHS AG 015434NIA NIH HHS AG 024824NIA NIH HHS P30 AG024824
6 · The paper itself

Abstract

A two-arm, prospective, randomized, controlled trial study was conducted to investigate the effects of movement velocity during progressive resistance training (PRT) on the size and contractile properties of individual fibers from human vastus lateralis muscles. The effects of age and sex were examined by a design that included 63 subjects organized into four groups: young (20-30 yr) men and women, and older (65-80 yr) men and women. In each group, one-half of the subjects underwent a traditional PRT protocol that involved shortening contractions at low velocities against high loads, while the other half performed a modified PRT protocol that involved contractions at 3.5 times higher velocity against reduced loads. Muscles were sampled by needle biopsy before and after the 14-wk PRT program, and functional tests were performed on permeabilized individual fiber segments isolated from the biopsies. We tested the hypothesis that, compared with low-velocity PRT, high-velocity PRT results in a greater increase in the cross-sectional area, force, and power of type 2 fibers. Both types of PRT increased the cross-sectional area, force, and power of type 2 fibers by 8-12%, independent of the sex or age of the subject. Contrary to our hypothesis, the velocity at which the PRT was performed did not affect the fiber-level outcomes substantially. We conclude that, compared with low-velocity PRT, resistance training performed at velocities up to 3.5 times higher against reduced loads is equally effective for eliciting an adaptive response in type 2 fibers from human skeletal muscle.

Indexed as

AdultAgedAged, 80 and overAge FactorsFemaleHumansMaleMovementMuscle ContractionMuscle Fibers, Fast-TwitchProspective StudiesResistance TrainingSex FactorsYoung Adult

Identifiers

PMID21799130
PMCPMC3191797
OpenAlexW2131760648

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.